30 days will happen

I'm using someone's cert watch in cron daily, and I get an email an hour or so before let's encrypt updates my certificates. I have to cron time slots for running let's encrypt (certbot-auto).

I'd suggest changing the timeout to 25 days.

Start by reading the certwatch cron implementation and locate the timeout that triggers the certificate-renewal warning. Confirm how the current 30-day interval is calculated, change the target interval to 25 days, and verify that the resulting notification timing matches the requested behavior.

Written by the indexing model from the issue text.